The document is a presentation about alternative GPS navigation for Scout Navigators. It discusses how GPS works using satellite constellations and triangulation. It notes that GPS provides accurate positions, aids in journey planning, and can track people, cars, and criminals. Some factors that affect GPS accuracy include trees, rain, tall buildings, and solar storms. The presentation concludes by advertising a geocaching event in London on November 6th, 2013.

1. Scout Navigator Activity Badge-
Alternative D GPS Navigation
A Presentation by
Loony Londo

2. 1. Demonstrate an awareness of the
Global Positioning System (GPS)
 1. How it works

3. Satellite Constellation

4. Triangulation

5. Corrections

6. Special Relativity


7. General Relativity

8. Ownership and Control of the
System

9. 2nd
SPACE OPERATIONS SQ.

10. Benefits to Society
 1) Accurate positions
 2) Journey Planning
 3) Can track people cars and
criminals
 4) Geocaching!

11. What Factors Affect Accuracy
1) Trees
2) Rain
3) Tall Buildings
4) Solar Storms

12. National Grid

13. Thursday Geocaching in Space!
GC4PVV7
Geocaching in Space London Event
6th
November 2013
Metropolitian Bar, Baker Street between 6 to 10 pm